Interactive Projector Device

ABSTRACT

An interactive device includes a first sensor, a first button, an accelerometer, a processor, and a transmitter. The first sensor is configured to receive coordinate information from a coordinate projection of a projector. The first button is configured to transmit an erase signal when the first button is pressed. The accelerometer is configured to provide angle information for the interactive device. The processor is in communication with the first sensor, with the first button, and with the accelerometer. The processor configured to receive the coordinate information from the first sensor, to receive the erase signal from the first button, to receive the angle information from the accelerometer, and to generate erase information based on the coordinate information, the erase signal, and the angle information. The transmitter is in communication with the processor, and is configured to transmit a delete request including the erase information received from the processor to the projector.

FIELD OF THE DISCLOSURE

This disclosure relates generally to information handling systems, andmore particularly relates to an interactive projector device.

BACKGROUND

As the value and use of information continues to increase, individualsand businesses seek additional ways to process and store information.One option available to users is information handling systems. Aninformation handling system generally processes, compiles, stores,and/or communicates information or data for business, personal, or otherpurposes thereby allowing users to take advantage of the value of theinformation. Because technology and information handling needs andrequirements vary between different users or applications, informationhandling systems may also vary regarding what information is handled,how the information is handled, how much information is processed,stored, or communicated, and how quickly and efficiently the informationmay be processed, stored, or communicated. The variations in informationhandling systems allow for information handling systems to be general orconfigured for a specific user or specific use such as financialtransaction processing, airline reservations, enterprise data storage,or global communications. In addition, information handling systems mayinclude a variety of hardware and software components that may beconfigured to process, store, and communicate information and mayinclude one or more computer systems, data storage systems, andnetworking systems.

An interactive projector can allow a user to interact with a display orimage by utilizing a pen. The pen can enable the user to write,highlight, or draw on the screen by interacting with software on theinteractive projector. The projector can project grid patterns of pixelson the screen that are invisible to an individual. The pen can have asensor that captures a small grid of pixels corresponding to a locationon the screen, and the pen can communicate the location to theprojector. The projector can then place a pointer on screen at thelocation received from the pen.

BRIEF DESCRIPTION OF THE DRAWINGS

It will be appreciated that for simplicity and clarity of illustration,elements illustrated in the Figures have not necessarily been drawn toscale. For example, the dimensions of some of the elements areexaggerated relative to other elements. Embodiments incorporatingteachings of the present disclosure are shown and described with respectto the drawings presented herein, in which:

FIG. 1 is a block diagram of an interactive projector system;

FIG. 2 is a perspective diagram of an interactive projector eraser;

FIGS. 3 and 4 are perspective diagrams of an interactive projectorwriter/eraser;

FIGS. 5 and 6 are diagrams of an alternative embodiment of theinteractive projector writer/eraser;

FIGS. 7 and 8 are a flow diagram of a method for implementing aninteractive device for the interactive projector system;

FIGS. 9 and 10 are a flow diagram of an alternative method forimplementing an interactive device for the interactive projector system;and

FIG. 11 is a block diagram of a general computer system.

The use of the same reference symbols in different drawings indicatessimilar or identical items.

DETAILED DESCRIPTION OF DRAWINGS

The following description in combination with the Figures is provided toassist in understanding the teachings disclosed herein. The followingdiscussion will focus on specific implementations and embodiments of theteachings. This focus is provided to assist in describing the teachingsand should not be interpreted as a limitation on the scope orapplicability of the teachings. However, other teachings can certainlybe utilized in this application.

FIG. 1 shows an interactive projector system 100 of an informationhandling system. For purposes of this disclosure, an informationhandling system may include any instrumentality or aggregate ofinstrumentalities operable to compute, classify, process, transmit,receive, retrieve, originate, switch, store, display, manifest, detect,record, reproduce, handle, or utilize any form of information,intelligence, or data for business, scientific, control, or otherpurposes. For example, an information handling system may be a personalcomputer, a network storage device, or any other suitable device and mayvary in size, shape, performance, functionality, and price. Theinformation handling system may include random access memory (RAM), oneor more processing resources such as a central processing unit (CPU) orhardware or software control logic, ROM, and/or other types ofnonvolatile memory. Additional components of the information handlingsystem may include one or more disk drives, one or more network portsfor communicating with external devices as well as various input andoutput (I/O) devices, such as a keyboard, a mouse, and a video display.The information handling system may also include one or more busesoperable to transmit communications between the various hardwarecomponents.

The interactive projector system 100 includes an interactive device 102and a projector 104. The interactive device 102 includes anaccelerometer 106, a processor 108, a memory 110, a transmitter 112,sensors 114, 116, and 118, and buttons 120 and 122. The accelerometer ororientation positioning circuitry 106 is in communication with theprocessor 108, which in turn is in communication with the memory 110,the transmitter 112, the sensors 114, 116, and 118, and the buttons 120and 122. The transmitter 112 is in communication with the projector 104.The communication between the transmitter 112 and the projector 104 ispreferably a wireless communication, such as an 802.11 wireless InternetProtocol (IP) communication. The interactive device 102 may be aninteractive projector eraser, an interactive projector writer/eraser, orthe like. The orientation positioning circuitry can be an accelerometer,a gyroscope, or a combination of an accelerometer and a gyroscope.

In an embodiment, the interactive device 102 can be an interactiveprojector eraser 200 as shown in FIG. 2. The interactive projectoreraser 200 includes the accelerometer 106, the processor 108, the memory110, the transmitter 112, the sensor 114, and the button 120. Theexterior of the interactive projector eraser 200 can include a bodyhaving a first surface 202, a second surface 204, the sensor 114, andthe button 120. The accelerometer 106 can be a two axis accelerometer,such that the accelerometer can provide detailed angle informationassociated with the interactive projector eraser 200. The accelerometer106 can determine whether the interactive projector eraser 200 is in avertical orientation, a horizontal orientation, or at any angle inbetween for each axis of the accelerometer. The accelerometer 106 cansend the angle information to the processor 108. When the angleinformation is received at the processor 108, the angle information canbe temporarily cached by the processor in the memory 110 for lateraccess by the processor. When new angle information is received at theprocessor 108, the cached angle information can then be replaced by thenew angle information from the accelerometer 106. Alternatively, theaccelerometer 106 can continuously determine the angle information, butonly send the angle information to the processor 108 in response to arequest for the angle information from the processor.

The sensor 114 can be an optical sensor, such that the sensor canreceive coordinate information of a coordinate grid projected onto asurface by the projector 104. The coordinate grid can be an optical gridthat is output along with the display image. The optical grid can beinvisible to the user, such that the coordinate grid does not interferewith the viewing of the display image from the projector 104. Thecoordinate grid can provide the interactive device 102 with positioninginformation for determining the location of the interactive devicewithin the coordinate grid. The sensor 114 can continually receive thecoordinate information, and can send the coordinate information to theprocessor 108. The coordinate information then can be temporarily cachedin the memory 110 for later access by the processor 108. Alternatively,the sensor 114 can continuously determine the coordinate information,but can send the coordinate information to the processor 108 in responseto a request for the coordinate information from the processor. Thesecond surface 204 can be a felt surface or the like, such that a usermay know a proper orientation for the interactive device 100 withrespect to the projection surface and the projector 104. Thus, as theuser holds the second surface 204 in physical communication with orproximate to the display surface of the projection from the projector104, the sensor 114 can be positioned in a manner that the sensor canreceive the light from the coordinate grid to retrieve the coordinateinformation. In another embodiment, the coordinate grid and the sensor114 can be infrared, ultrasonic, or the like.

The button 120 is shown as a physical button, however in anotherembodiment the button can be a soft button shown on a display screen ofthe interactive projector eraser 200. In this embodiment, the softbutton can be pressed in response to contact with the location of thesoft button on the display screen, such as from the pressure orcapacitance of a finger or the like. When the button 120 is pressed, anerase signal can be sent from the button to the processor 108, which inturn retrieves the current coordinate information and the current angleinformation from the memory 110. Alternatively, when the processor 108receives the erase signal, the processor can retrieve the currentcoordinate information directly from the sensor 114 and the currentangle information directly from the accelerometer 106. The processor 108can then utilize the coordinate information and the angle information tocreate an erase request, which the processor can send to the transmitter112 for transmission to the projector 104. When the projector 104receives the erase request, the projector can determine size, shape, andlocation of the projection to erase based on the coordinate informationand the angle information within the erase request. Thus, if the button120 is continually pressed, the processor 108 can continually send eraserequests to the projector 104 via the transmitter 112, and each eraserequest may have different coordinate information and different angleinformation. Therefore, as the user moves the interactive projectoreraser 200 across the projection with the button 120 continuallydepressed, the interactive projector eraser can send multiple eraserequests to the projector 104, which in turn removes items from theprojection based on the coordinate information and the angle informationincluded in the erase requests.

In another embodiment, the interactive device 102 can be an interactiveprojector writer/eraser 300 as shown in FIGS. 3 and 4. The interactiveprojector writer/eraser 300 includes the accelerometer 106, theprocessor 108, the memory 110, the transmitter 112, the sensors 114 and116, and the buttons 120 and 122. The exterior of the interactiveprojector writer/eraser 300 includes a body having a first surface 302,a second surface 304, the sensors 114 and 116, and the buttons 120 and122.

The operation of the interactive projector writer/eraser 300 can bediscussed with reference to FIGS. 1, 3, and 4. The accelerometer 106,the sensor 114, and the button 120 can each operate as discussed abovewith respect to FIGS. 1 and 2. The sensor 116 can be an optical sensor,and can extend from the first surface 302, such that the user can placethe sensor in physical communication with the projection surface similarto a pencil or a pen. The sensor 116 can receive the light from thecoordinate grid as the light is reflected off the projection surface.The sensor 116 can determine the coordinate information of thecoordinate grid at a particular location of the sensor similar to thesensor 114. The sensor 116 can continuously send the coordinateinformation to the processor 108, or can send the coordinate informationto the processor in response to a request from the processor. The secondsurface 304 can be a felt surface or the like, such that a user may knowa proper orientation of the interactive device 100 with respect to theprojection surface and the projector 104. Thus, as the user holds thesecond surface 304 in physical communication with or proximate to thedisplay surface of the projection from the projector 104, the sensor 114can be positioned in a manner that the sensor can receive the light fromthe projector to retrieve the coordinate information.

When the button 122 is pressed, a write signal is sent from the buttonto the processor 108, which in turn retrieves the current coordinateinformation from the sensor 116. The processor 108 can then utilize thecoordinate information to create a write request, which the processorcan send to the transmitter 112 for transmission to the projector 104.When the projector 104 receives the write request, the projector candetermine size, shape, and location of an addition to the projectionbased on the coordinate information. Thus, if the button 122 iscontinually depressed, the processor 108 can continually send writerequests to the projector 104 via the transmitter 112, and the writerequests can include different coordinate information. Therefore, as theuser moves the interactive projector writer/eraser 300 across theprojection with the button 122 continually depressed, the interactiveprojector writer/eraser can send write requests to the projector 104,which in turn adds items to projection based on the coordinateinformation included in the write requests. Additionally, the sensor 116can be partially pressed into the first surface 302, and in response thesensor can create a write signal and send the write signal to theprocessor 108.

In another embodiment, the interactive device 102 can be an interactiveprojector writer/eraser 500 as shown in FIGS. 5 and 6. The interactiveprojector writer/eraser 500 includes the accelerometer 106, theprocessor 108, the memory 110, the transmitter 112, the sensors 114,116, and 118, and the buttons 120 and 122. The exterior of theinteractive projector writer/eraser 500 includes a body having a firstsurface 502, a second surface 504, the sensors 114, 116, and 118, andthe buttons 120 and 122.

The accelerometer 106, the sensors 114 and 116, and the buttons 120 and122 can each operate as discussed above with respect to FIGS. 1-4. Thesensor 118 can be an optical sensor, such that the sensor can receivecoordinate information from the coordinate grid projected onto thesurface similar to the sensor 116. The sensor 118 can receive the lightfrom the coordinate grid as the light is reflected off the projectionsurface. Thus, the sensor 118 can determine the coordinate informationof the coordinate grid at a particular location of the sensor similar tothe sensor 116. The sensor 118 can continuously send the coordinateinformation to the processor 108, or can send the coordinate informationto the processor in response to a request from the processor. The sensor118 can be partially pressed into the first surface 302, and in responsethe sensor can create an erase signal and send the erase signal to theprocessor 108.

When the processor 108 receives the erase signal from the sensor 118,the processor can retrieve the current coordinate information from thesensor. The processor 108 can then utilize the coordinate information tocreate an erase request, which the processor can send to the transmitter112 for transmission to the projector 104. Thus, if the sensor 118 iscontinually depressed, the processor 108 can continually send eraserequests to the projector 104 via the transmitter 112, and each eraserequest may have different coordinate information. Therefore, as theuser moves the interactive projector eraser 200 across the projectionwith the sensor 118 continually depressed, the interactive projectoreraser can send multiple erase requests to the projector 104, which inturn removes items from the projection based on the coordinateinformation in the erase requests.

In an embodiment, when a write signal is received from the sensor 116 orthe button 122, or an erase signal is received from the sensor 118, theprocessor 108 can retrieve the angle information from the accelerometer106 and include the angle information in a write request or an eraserequest. In another embodiment, the interactive projector writer/eraser500 can exclude the surface 504, such that the sensor 116 is utilizedfor write request, and the sensor 118 is utilized for erase request.

FIGS. 7 and 8 show a flow diagram of a method 700 for implementing aninteractive device for the interactive projector system. At block 702,first coordinate positioning information is received from a coordinategrid projected from a projector at a first sensor. First angleinformation for the interactive device is determined using anaccelerometer at block 704. At block 706, a first button is detected asbeing pressed. The first button is associated with a first erase signal.A first erase request is generated in response to receiving the firsterase signal from the first button at block 708. The first erase requestcan include the first coordinate positioning information and the firstangle information. At block 710, the first erase request is transmittedto a projector.

At block 712, second coordinate positioning information is received fromthe coordinate grid projected from the projector at a second sensor. Thesecond sensor can be a nib extending from an end of the interactivedevice. At block 714, a second button and/or the second sensor aredetected as being pressed. A write signal is sent when the second buttonor the second sensor are pressed at block 716. At block 718, a writeinformation is generated based on the second coordinate positioninginformation and the second angle information. A write request includingthe write information is transmitted to a projector at block 720.

At block 722, third coordinate positioning information is received at athird sensor. The third sensor can be a nib extending from an end of theinteractive device. The third sensor is detected as being pressed atblock 724. At block 726, a second erase signal is sent when the thirdsensor is pressed. The third coordinate positioning information isretrieved in response to the second erase signal at block 728. At block730, third angle information is retrieved in response to the seconderase signal. At block 732, a second erase request is generated. Thesecond erase request includes the third coordinate positioninginformation and the third angle information. The second erase request istransmitted to the projector at block 734.

FIGS. 9 and 10 show a flow diagram of another method 900 forimplementing an interactive device for the interactive projector system.At block 902, a determination is made whether a first button or a secondbutton is pressed. If the first button is pressed, a first erase signalis sent at block 904. At block 906, first coordinate positioninginformation is determined from a coordinate grid projected from aprojector at a first sensor. First angle information is determined usingorientation positioning circuitry for the interactive device at block908. The orientation positioning circuitry can be an accelerometer, agyroscope, or a combination of an accelerometer and a gyroscope. Atblock 910, a first erase request is generated. The first erase requestincludes the first coordinate positioning information and the firstangle information. At block 912, the first erase request is transmittedto the projector and the flow diagram continues at block 924.

However, if the second button is pressed, a write signal is sent atblock 914. At block 916, second coordinate positioning information isdetermined from the coordinate grid projected from the projector at asecond sensor. Second angle information is determined using theorientation positioning circuitry for the interactive device at block918. At block 920, a write request is generated. The write requestincludes the second coordinate positioning information and the secondangle information. At block 922, the write request is transmitted to theprojector and the flow diagram continues at block 924.

At block 924, a determination is made whether the second sensor or athird sensor is pressed. If the second sensor is pressed, the flowdiagram continues as stated above at block 914. However, if the thirdsensor is pressed, a second erase signal is sent at block 926. At block928, third coordinate positioning information is determined from thecoordinate grid projected from the projector at the third sensor. Atblock 930, the third coordinate positioning information is retrievedfrom the third sensor. Third angle information is determined using theorientation positioning circuitry for the interactive device at block932. At block 934, a second erase request is generated. The second eraserequest includes the third coordinate positioning information and thethird angle information. At block 936, the second erase request istransmitted to the projector.

FIG. 11 shows an illustrative embodiment of a general computer system1100 in accordance with at least one embodiment of the presentdisclosure. The computer system 1100 can include a set of instructionsthat can be executed to cause the computer system to perform any one ormore of the methods or computer based functions disclosed herein. Thecomputer system 1100 may operate as a standalone device or may beconnected such as using a network, to other computer systems orperipheral devices.

In a networked deployment, the computer system may operate in thecapacity of a server or as a client user computer in a server-clientuser network environment, or as a peer computer system in a peer-to-peer(or distributed) network environment. The computer system 1100 can alsobe implemented as or incorporated into various devices, such as apersonal computer (PC), a tablet PC, a set-top box (STB), a personaldigital assistant (PDA), a mobile device, a palmtop computer, a laptopcomputer, a desktop computer, a communications device, a wirelesstelephone, a land-line telephone, a control system, a camera, a scanner,a facsimile machine, a printer, a pager, a personal trusted device, aweb appliance, a network router, switch or bridge, or any other machinecapable of executing a set of instructions (sequential or otherwise)that specify actions to be taken by that machine. In a particularembodiment, the computer system 1100 can be implemented using electronicdevices that provide voice, video or data communication. Further, whilea single computer system 1100 is illustrated, the term “system” shallalso be taken to include any collection of systems or sub-systems thatindividually or jointly execute a set, or multiple sets, of instructionsto perform one or more computer functions.

The computer system 1100 may include a processor 1102 such as a centralprocessing unit (CPU), a graphics processing unit (GPU), or both.Moreover, the computer system 1100 can include a main memory 1104 and astatic memory 1106 that can communicate with each other via a bus 1108.As shown, the computer system 1100 may further include a video displayunit 1110, such as a liquid crystal display (LCD), an organic lightemitting diode (OLED), a flat panel display, a solid state display, or acathode ray tube (CRT). Additionally, the computer system 1100 mayinclude an input device 1112, such as a keyboard, and a cursor controldevice 1114, such as a mouse. The computer system 1100 can also includea disk drive unit 1116, a signal generation device 1118, such as aspeaker or remote control, and a network interface device 1120.

In a particular embodiment, as depicted in FIG. 11, the disk drive unit1116 may include a computer-readable medium 1122 in which one or moresets of instructions 1124 such as software, can be embedded. Further,the instructions 1124 may embody one or more of the methods or logic asdescribed herein. In a particular embodiment, the instructions 1124 mayreside completely, or at least partially, within the main memory 1104,the static memory 1106, and/or within the processor 1102 duringexecution by the computer system 1100. The main memory 1104 and theprocessor 1102 also may include computer-readable media. The networkinterface device 1120 can provide connectivity to a network 1126, e.g.,a wide area network (WAN), a local area network (LAN), or other network.

In an alternative embodiment, dedicated hardware implementations such asapplication specific integrated circuits, programmable logic arrays andother hardware devices can be constructed to implement one or more ofthe methods described herein. Applications that may include theapparatus and systems of various embodiments can broadly include avariety of electronic and computer systems. One or more embodimentsdescribed herein may implement functions using two or more specificinterconnected hardware modules or devices with related control and datasignals that can be communicated between and through the modules, or asportions of an application-specific integrated circuit. Accordingly, thepresent system encompasses software, firmware, and hardwareimplementations.

In accordance with various embodiments of the present disclosure, themethods described herein may be implemented by software programsexecutable by a computer system. Further, in an exemplary, non-limitedembodiment, implementations can include distributed processing,component/object distributed processing, and parallel processing.Alternatively, virtual computer system processing can be constructed toimplement one or more of the methods or functionality as describedherein.

The present disclosure contemplates a computer-readable medium thatincludes instructions 1124 or receives and executes instructions 1124responsive to a propagated signal, so that a device connected to anetwork 1126 can communicate voice, video or data over the network 1126.Further, the instructions 1124 may be transmitted or received over thenetwork 1126 via the network interface device 1120.

While the computer-readable medium is shown to be a single medium, theterm “computer-readable medium” includes a single medium or multiplemedia, such as a centralized or distributed database, and/or associatedcaches and servers that store one or more sets of instructions. The term“computer-readable medium” shall also include any medium that is capableof storing, encoding or carrying a set of instructions for execution bya processor or that cause a computer system to perform any one or moreof the methods or operations disclosed herein.

In a particular non-limiting, exemplary embodiment, thecomputer-readable medium can include a solid-state memory such as amemory card or other package that houses one or more non-volatileread-only memories. Further, the computer-readable medium can be arandom access memory or other volatile re-writable memory. Additionally,the computer-readable medium can include a magneto-optical or opticalmedium, such as a disk or tapes or other storage device to capturecarrier wave signals such as a signal communicated over a transmissionmedium. A digital file attachment to an e-mail or other self-containedinformation archive or set of archives may be considered a distributionmedium that is equivalent to a tangible storage medium. Accordingly, thedisclosure is considered to include any one or more of acomputer-readable medium or a distribution medium and other equivalentsand successor media, in which data or instructions may be stored.

Although only a few exemplary embodiments have been described in detailabove, those skilled in the art will readily appreciate that manymodifications are possible in the exemplary embodiments withoutmaterially departing from the novel teachings and advantages of theembodiments of the present disclosure. Accordingly, all suchmodifications are intended to be included within the scope of theembodiments of the present disclosure as defined in the followingclaims. In the claims, means-plus-function clauses are intended to coverthe structures described herein as performing the recited function andnot only structural equivalents, but also equivalent structures.

1. An interactive device comprising: a first sensor configured toreceive coordinate information from a coordinate projection of aprojector; a first button configured to transmit an erase signal whenthe first button is pressed; an accelerometer configured to provideangle information of the interactive device; a processor incommunication with the first sensor, with the first button, and with theaccelerometer, the processor configured to receive the coordinateinformation from the first sensor, to receive the erase signal from thefirst button, to receive the angle information from the accelerometer,and to generate erase information based on the coordinate information,the erase signal, and the angle information; and a transmitter incommunication with the processor, the transmitter configured to transmita delete request including the erase information received from theprocessor to the projector.
 2. The interactive device of claim 1 furthercomprising: a second sensor to receive the coordinate information fromthe coordinate projection of the projector; and a second button to senda write signal to the processor when the second button is pressed. 3.The interactive device of claim 2 wherein the processor is furtherconfigured to receive the coordinate information from the second sensor,to receive the write signal from the second button, and to generatewrite information based on the coordinate information and the writesignal.
 4. The interactive device of claim 3 wherein the transmitter isfurther configured to transmit a write request including the writeinformation received from the processor to the projector.
 5. Theinteractive device of claim 3 wherein the first button is a soft button.6. The interactive device of claim 1 further comprising: a bodyincluding: a first surface including the first sensor; and a secondsurface different from the first surface, the second surface beingopposite of the first sensor on the interactive device, and the secondsurface indicating an erasing position of the interactive device.
 7. Theinteractive device of claim 6 wherein the second surface is a feltsurface.
 8. A method for implementing an interactive device within aninteractive projector system, the method comprising: receiving, at afirst sensor, first coordinate positioning information from a coordinategrid projected from a projector; determining, using an accelerometer,first angle information for the interactive device; detecting that afirst button is pressed, the first button being associated with a firsterase signal; generating a first erase request in response to the firsterase signal, wherein the first erase request includes the firstcoordinate positioning information and the first angle information; andtransmitting the first erase request from the interactive device to theprojector.
 9. The method of claim 8 further comprising: receiving, at asecond sensor, second coordinate information from the coordinateprojection of the projector; detecting that a second button is pressed;sending a write signal when the second button is pressed; retrieving thesecond coordinate information from the second sensor in response to thewrite signal; retrieving second angle information from the accelerometerin response to the write signal; generating write information based onthe second coordinate information and the second angle information; andtransmitting a write request including the write information to theprojector.
 10. The method of claim 9 further comprising: detecting thatthe second sensor is pressed; and sending the write signal when thesecond sensor is pressed.
 11. The method of claim 9 further comprising:receiving, at a third sensor, third coordinate information from thecoordinate projection of the projector; detecting that the third sensoris pressed; sending a second erase signal when the third sensor ispressed; retrieving the third coordinate information from the thirdsensor in response to the second erase signal; retrieving third angleinformation from the accelerometer in response to the second erasesignal; generating a second erase request including the third coordinateinformation and the third angle information; and transmitting the seconderase request to the projector.
 12. The method of claim 11 wherein thesecond sensor extends as a first nib from a first end of the interactivedevice.
 13. The method of claim 12 wherein the third sensor extends as asecond nib from a second end of the interactive device.
 14. The methodof claim 13 wherein the first end is on an opposite side of theinteractive device from the second end.
 15. A method for implementing aninteractive device within an interactive projector system, the methodcomprising: determining whether a first button or a second button ispressed, the first button being associated with a first erase requestand the second button being associated with a write request; when thefirst button is pressed: sending a first erase signal; determining, at afirst sensor, first coordinate positioning information from a coordinategrid projected from a projector; determining, using orientationpositioning circuitry, first angle information for the interactivedevice; generating the first erase request, wherein the erase requestincludes the first coordinate positioning information and the firstangle information; and transmitting the first erase request from theinteractive device to the projector; and when the second button ispressed: sending a write signal; determining, at a second sensor, secondcoordinate positioning information from the coordinate grid projectedfrom the projector; determining, using the orientation positioningcircuitry, second angle information for the interactive device;generating the write request, wherein the write request includes thesecond coordinate positioning information and the second angleinformation; and transmitting the write request from the interactivedevice to the projector.
 16. The method of claim 15 further comprising:detecting that the second sensor is pressed; and sending the writesignal when the second sensor is pressed.
 17. The method of claim 15further comprising: detecting that the third sensor is pressed; sendinga second erase signal when the third sensor is pressed; determining, ata third sensor, third coordinate positioning information from thecoordinate projection of the projector; retrieving the third coordinatepositioning information from the third sensor in response to the seconderase signal; retrieving third angle information from the orientationpositioning circuitry in response to the second erase signal; generatinga second erase request based on the third coordinate information and thethird angle information; and transmitting the second erase request tothe projector.
 18. The method of claim 17 wherein the second sensorextends as a first nib from a first end of the interactive device, andthe third sensor extends as a second nib from a second end of theinteractive device.
 19. The method of claim 18 wherein the first end ison an opposite side of the interactive device from the second end. 20.The method of claim 15 wherein the orientation positioning circuitry isan accelerometer, a gyroscope, or a combination thereof.